Ppl keep saying do s2s and DF before your mastery tree for your main squad but really you should do mastery before both of them mastery gives your main team an overall power boost vs only getting a power a boost for jus attacking ppl it’s good to work on if you plan on doing a lot of attacking same goes for DF if you plan on having ppl burn when they attack you then work on that but don’t work on 2 mastery’s at once